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net/i40e: fix multi-queue Rx interrupt for VF

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The interrupt vector which bind to queues should not be larger than
the max available vector. It will cause port start failed. This patch
changed the judgement condition of the limited vector id. It can
effectively avoid vector id out of range.

Fixes: 6a6cf5f88b ("net/i40e: enable multi-queue Rx interrupt for VF")

Signed-off-by: Lunyuan Cui <lunyuanx.cui@intel.com>
Reviewed-by: Qiming Yang <qiming.yang@intel.com>
This commit is contained in:
Lunyuan Cui 2020-01-17 08:22:58 +00:00 committed by Ferruh Yigit
parent 89a532ba87
commit 40163f9e17
1 changed files with 1 additions and 5 deletions
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6
drivers/net/i40e/i40e_ethdev_vf.c
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@ -658,7 +658,6 @@ i40evf_config_irq_map(struct rte_eth_dev *dev)
struct rte_intr_handle *intr_handle = &pci_dev->intr_handle;
uint32_t vector_id;
int i, err;
uint16_t nb_msix;
if (dev->data->dev_conf.intr_conf.rxq != 0 &&
rte_intr_allow_others(intr_handle))
@ -666,9 +665,6 @@ i40evf_config_irq_map(struct rte_eth_dev *dev)
else
vector_id = I40E_MISC_VEC_ID;
nb_msix = RTE_MIN(vf->vf_res->max_vectors,
intr_handle->nb_efd);
map_info = (struct virtchnl_irq_map_info *)cmd_buffer;
map_info->num_vectors = dev->data->nb_rx_queues;
for (i = 0; i < dev->data->nb_rx_queues; i++) {
@ -683,7 +679,7 @@ i40evf_config_irq_map(struct rte_eth_dev *dev)
intr_handle->intr_vec[i] = vector_id;
if (vector_id > I40E_MISC_VEC_ID)
vector_id++;
if (vector_id > nb_msix)
if (vector_id >= vf->vf_res->max_vectors)
vector_id = I40E_RX_VEC_START;
}